Boat-detaching apparatus.



H. B. HILLS. BOAT DETACHING APPARATUS.

APPLICATION FILED JUNE 23. I917.

Patented Oct. 15, 1918 2 SHEETS-SHEET l msmm,

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H. B HILLS.

BOAT-DETACHING APPARA-TUS.

APPLICATION FILED JUN E23. I917.

LQSLE'YQD V Patented Oct-15,1918.

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HARRY B. HILLS, OF RIVERTON, NEW JERSEY, ASS IGNOR TO STEWARD DAVIT &EQUIP- MENT CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BOAT-DETACHING APPARATUS.

Specification of Letters Patent.

rate-ates Oct. is, was.

Application filed 'June 23, 1917. Serial No. 176,477.

To all whom it may concern:

Be it, known that I, HARRY B. HILLs, a citizen of the, United States ofAmerica, residing in River-ton, in the county of Burlington, in theState of' New Jersey, have invented certain new and useful Improvementsin Boat-Detaching Apparatus, of which the following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof.

My present invention consists in improved boat detaching means, e. meansfor releasablysecuring boats to ships davits, and the primary object ofthe invention is to provide simple and eifective apparatus for thepurpose which will be .positive in operation, and will insure thesimultaneous release of the two ends ofthe; boat regardlessof whetherthe boat is in contact with the water or not, and is but little apt toget out of order during comparatively long periods of disuse, and iscomparatively inexpensive to construct.

The various features of novelty which characterize my invention arepointed out with particularity in the claims annexed.

hereto and forming a part of this specification. For a betterunderstanding of the invention, however, and the advantages possessed byit, reference should be had to the accompanying drawings and descriptivematter in which I have illustrated and described a preferred embodimentof my invention.

Of the drawings:

Figure 1 is a longitudinal section of a ships boat, provided with oneform of my improved detaching apparatus.

Fig. 2 is a partial section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 3--3 of Fig. 4. V

Fig. 4 is a view taken similarly to Fig. 1,

but on a larger scale, and showing a portion.

. of the two detaching devices B, which are identical in construction,comprises a body part, which is preferably made of steel plate, bent toform a channel, U shaped in cross section, as shown in Fig. 3. Bolts orrivets C passing through apertures formed for the purpose in the bottomwall of the channel serve to secure the member B to the boat stem, sternpost or other portion of the boat structure to which the member issecured. A pin or shaft D having its ends secured in the side walls ofthe member B, forms a pivoted support for a hook E. The latter, when theboat is in its normal suspended position, engages the link or eye Jcarried by the corresponding davit block and tackle connection.

The hook E i formed with a locking tail E, which normally lies in thechannel between theside walls of the member B, and

ed at each end with a crank pin H to which the corresponding connectingrod G is pivotally connected. Preferably the locking tail is so shapedas indicated at E that it does not tend to cam the locking bolt F out ofits normal locking position.

As shown, each connecting rod G comprises an upper yoke portion G, towhich the ends of the corresponding bolt F are pivotally secured.Interposed between the'ends of the member G and the outer walls of themember B are washers F surrounding the bolt F, and preventing lateraldisplacement of the latter. Advantageously friction is reduced, andprovision made for compensating for wear by surrounding the bolt F withloose fitting renewable sleeve sections F, F, F. The two sleeve sectionsF work in the slots B, and sleeve section F which is interposed betweenthe two sections F, is engaged by the locking tail E of the hook E inthe normal condition of the apparatus. Each connecting member G alsocomprises a tubular body portion, which is shown as riveted or otherwisesecured at its upper end to the end member G and connected at its lowerend. by an adjustable threaded joint to a yoke shaped member G The endsof the cient motion to the connecting 2.0

legs'of the latter are connected by a pivot pin G which passes through acollar of bearing sleeve 1 surrounding the corresponding crank pin H. Acollar H secured to the end of each crank pin H holds the correspondingsleeve member I on the crank pin H. At a convenient place, normally inposition to be operated by the coxswain, a lever handle H is secured tothe shaft H.

In the normal condition of the apparatus, the hooks E of the twodetaching devices at the opposite ends of the boat are held in operativeengagement with the links J by the bolts Fwhich engage the locking tailsE of the hooks E. When it is desired'to disconnect the boat from thedavit links J, the shaft movement of t-hecrank pins H gives suflirods Gto .carry the bolts F clear of the loc ing tails E of the hooks E. Thispermits the hooks E ,to swing up and thereby free the links J.

To prevent the links J from accidentally passing out ofengagement withthe hooks E, in case the supporting tension on the links J is released,I may advantageously provide.

each detaching device with a pivoted keeper L as shown. Each keeper Lcomprises a port on passing through and rotatably mounted in theside'walls of the corresponding memberB, and an arm portion L which,

is bent to extend into contact with the tip E of the hook E in thenormal condition of the apparatus' In this condition the free end of thearm L rests, and isgravity' held against a supporting stud carried bythe member B. In this normal condition of the keepers they prevent thelinks J from being moved out of engagement with the hooks E. When it isdesired to disengage the links from the hooks E without turning thelatter out of their normal operative position, this may be done by firstmovin each keeper -L upward, after which the lin s J may be moved downoff the hooks E.

The boat detaching apparatus described possesses certa n importantpractical advan-' tages. In the first place the construction is onewhich lends itself to the manufacture of all portions of-the apparatusby which the weight of the suspended boat is supported outof rolledorforged metal rather than cast metal. The relatively long leveragethrough which the locking bolt F acts to hold the hook E inits normalposition minianizesthe liability of the apparatus to fail at this point.Furthermore the apparatus can be made at a small labor cost and with arelatively simple shop equipment. The apparatus is highly positive inits action and is of a character to deteriorate relatively slowly underthe conditions'of use to 7 which it is exposed and there is small likelihood of the apparatus getting out of order. The inherent strength andcompactness of H is rotated, and the consequent angular the detachingdevice is such that a single style and size may well be used with boatsdiffering greatly in character and loaded weight. This facilitatesstandardized con- 'struction and reduces the number of devices about acenter coinciding with the center ofthe corresponding locking bolt Ffacilitates the operation of the apparatus in case the detaching deviceis embedded in ice as may sometimes be the case. By arranging the partsso that the eccentric pins are 'moved slightly past their upper deadcenters when the apparatus is. in. its I normal operative condition thepossibility of an accidental release of the hooks E is greatlyminimized.

With the construction illustrated, the

hooks E may readily be released regardless of whether the weight of theboat is water borne to any extent or not, and if in the water,regardless of whether the davitconnections are subjected to a towingstram or not. i

It will be noted that when, in withdrawing the locking bolt F, the endof the looking tail E passes the pointwhere its contact with the bolt orroller F is tangential, the weights resting on the hook actmg throughthe end of the tail will exert on the surface of the bolt or roller F apowerful downward thrust which will greatly assist in and insure thecomplete withdrawal of the bolt, and as'the connection to the crank armsH and shaft His positive, thls action-on either locking bolt will aid inthe withdrawal of the other.

If desired to make it practically impossible to release the hooks Euntil the boat is water borne, this 'may be accomplished by a materialdeepening of the notch indicated at E ineach lockin tail E.

Having now descr d my invention, what I claim as new and desire tosecure by Let ters Patent, is:

11. A davit. connection comprising a merrr ber adapted to be secured toa, boat and formed with achannel slotted guideways-iformed in the sidewal s of the-channel, a hook pivoted between the side walls of thechannel and having a locking tail, and a locking'me'mber slidinglymovable in the slots of the side walls from the position wherein itengages the locking tail to one wherein member does not press the tailbackward in I it disengages said tail, the engagement be"- tween thelocking tail and the sliding lock-' ing member being such that thelocking moving to unlock it.

2. A davit connection comprising a member adapted to be secured to aboat and formed with a channel, slotted guideways formed in side wallsof the channel, a hook pivoted between the side walls of the channel andhaving a locking tail, and a locking formed in the side Walls of thechannel, a

hook pivoted between the side walls of the channel and having a lockingtail, and a locking member shdingly movable in the slots of thesidewalls from the position wherein it engages the locking tail to onewherein it disengages said tail, in combination with a rock shaftadapted to be secured along the bottom of a boat and having crank pin atits ends, a sleeve on a crank pin and a connecting rod pivotallyconnected to the sleeve and to the locking member.

4. In combination with davit connections adapted to be secured to thestem and stem of a boat, and, comprisin pivoted hooks and lockingdevices for ho ding said hooks in operativeposition, a rock shaftadapted to be secured along the bottom of a boat and having crank pinssecured to its ends, sleeves secured on sa1d crank pms, and connectingrods pivotally attached to said sleeves and connected to actuate thelocking device. a

5. Davit connections adapted to be Se.- cured to the stem and stern of aboat and comprising a member formed into a channel, and having slottedguideways formed in the channel walls, and a hook having a locking tailpivoted in the channel in combination with a rock shaftadapted to besecured along the bottom of a boat and formed with crank arms at itsside, sleeves secured onsaid crank arms, connecting rods pivotallysecured to said sleeves and looking slide members movable in the slotsof the channel and pivotally secured to the connecting rods.

6. Davit connections adapted to be secured to the stem and stern of aboat and comprising a member formed into a channel and having slottedguidewa s formed in the channel walls, and a hoo having a locking tailpivoted in the channel, in combination with a locking device ofcylindrical section adapted to move from looking to unlocking positionin the slotted guideways, and lock actuating means positively connectedto the locking devices at both ends of the boat.

HARRY B. HILLS.

